Class: Vcode

Inherits:
Object
  • Object
show all
Defined in:
lib/vcode.rb

Class Method Summary collapse

Class Method Details

.getvcode(w = 90, h = 40, fontsize = 24) ⇒ Object

控制器 def getcode

vcode = Vcode.getvcode
session[:code]=vcode[:code]
send_data vcode[:img], content_type: 'image/jpeg', disposition: 'inline'

end view <img src=“/getcode”> Vcode.getvcode(90,40,24) w宽，h高，fontsize字体大小 返回json类型



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# File 'lib/vcode.rb', line 13

def self.getvcode(w=90,h=40,fontsize=24)
  #创建画布
  img = Magick::Image.new(w, h) {
    self.background_color = 'white'
    self.format="JPG"
  }
  text= Magick::Draw.new
  text.pointsize = fontsize
  text.kerning = -1
  text.fill('blue')
  #随机文字
  code=""
  4.times{code << (97 + rand(26)).chr}
  #设置文字
  text.text(rand(w/2-5),h/2-5+ rand(h/2), code)
  #随机直线
  for i in 1..rand(4)
    text.line(rand(w), rand(h), rand(w), rand(h)) #直线
  end
  text.fill('blue')
  #燥点
  for i in 1..280
    text.point(rand(w), rand(h))
  end
  text.draw(img)
  #模糊
  img = img.sketch(0, 10, 50)
  #扭曲
  img = img.wave(5.5, 50)
  #返回图片数据流
  {img: img.to_blob,code: code}
end